Dye lasing in optically manipulated liquid aerosols

Yasin Karadag; Mehdi Aas; Alexandr Jonáš; Suman Anand; David McGloin; Alper Kiraz

doi:10.1117/12.2024166

12 September 2013 Dye lasing in optically manipulated liquid aerosols

Yasin Karadag, Mehdi Aas, Alexandr Jonáš, Suman Anand, David McGloin, Alper Kiraz

Proceedings Volume 8810, Optical Trapping and Optical Micromanipulation X; 88100P (2013) https://doi.org/10.1117/12.2024166
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States

Abstract

We present dye lasing from optically manipulated glycerol-water aerosols with diameters ranging between 7.7 and 11.0 μm confined in optical tweezers. While being optically trapped near the focal point of an infrared laser, the droplets stained with Rhodamine B were pumped with a Q-switched green laser and their fluorescence emission spectra featuring whispering gallery modes (WGMs) were recorded with a spectrograph. Nonlinear dependence of the intensity of the droplet WGMs on the pump laser fluence indicates dye lasing. The average wavelength of the lasing WGMs could be tuned between 600 and 630 nm by adjusting the droplet size. These results may lead to new ways of probing airborne particles, exploiting the high sensitivity of stimulated emission to small perturbations in the droplet laser cavity and the gain medium.

Citation Download Citation

Yasin Karadag, Mehdi Aas, Alexandr Jonáš, Suman Anand, David McGloin, and Alper Kiraz "Dye lasing in optically manipulated liquid aerosols", Proc. SPIE 8810, Optical Trapping and Optical Micromanipulation X, 88100P (12 September 2013); https://doi.org/10.1117/12.2024166

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